Features: Four linear-taper digital potentiometers
64 resistor taps per potentiometer
End-to-end resistance 2.5k, 10k, 50k or 100k
2-wire interface (I2C like)
Low wiper resistance, typically 80
Four non-volatile wiper settings for eachpotentiometer
Recall of saved wiper settings at power-up
2.5 to 6.0 volt operation
Standby current less than 1A
1,000,000 nonvolatile WRITE cycles
100 year nonvolatile memory data retention
24-lead SOIC, 24-lead TSSOP and BGA
Write protection for data register
Pinout
SpecificationsTemperature Under Bias .................. -55°C to +125°C
Storage Temperature ........................ -65°C to +150°C
Voltage on any Pin with
Respect to VSS
(1)(2) ........................................... -2.0V to +VCC +2.0V
VCC with Respect to Ground ................ -2.0V to +7.0V
Package Power Dissipation
Capability (TA = 25°C) ........................................ 1.0W
Lead Soldering Temperature (10 secs) .............. 300°C
Wiper Current..................................................... +12mADescriptionThe CAT5409 is four Digitally ProgrammablePotentiometers (DPP™) integrated with control logicand 16 bytes of NVRAM memory.
CAT5409 separate 6-bit control register (WCR) independentlycontrols the wiper tap position for each DPP.Associated with each wiper control register are four 6-
bit non-volatile memory data registers (DR) used forstoring up to four wiper settings. Writing to the wipercontrol register or any of the non-volatile data registersis via a 2-wire serial bus (I2C-like). On power-up, thecontents of the first data register (DR0) for each of thefour potentiometers is automatically loaded into itsrespective wiper control register (WCR).
The Write Protection (WP) pin protects againstinadvertent programming of the data register.
The CAT5409 can be used as a potentiometer or asa two terminal, variable resistor. It is intended forcircuit level or system level adjustments in a widevariety of applications.
CAT5409 Data Sheet
